CN113387718A - Method for preparing reticular ceramic film - Google Patents

Method for preparing reticular ceramic film Download PDF

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Publication number
CN113387718A
CN113387718A CN202110790170.4A CN202110790170A CN113387718A CN 113387718 A CN113387718 A CN 113387718A CN 202110790170 A CN202110790170 A CN 202110790170A CN 113387718 A CN113387718 A CN 113387718A
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China
Prior art keywords
ceramic
fibers
ceramic membrane
preparing
hours
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CN202110790170.4A
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Chinese (zh)
Inventor
冯凯萍
赵天晨
周兆忠
石栋
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Quzhou Intelligent Manufacturing Technology And Equipment Research Institute
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Quzhou Intelligent Manufacturing Technology And Equipment Research Institute
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Priority to CN202110790170.4A priority Critical patent/CN113387718A/en
Publication of CN113387718A publication Critical patent/CN113387718A/en
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C04B38/063—Preparing or treating the raw materials individually or as batches
    • C04B38/0635—Compounding ingredients
    • C04B38/0645—Burnable, meltable, sublimable materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/04—Clay; Kaolin
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
    • C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/52—Constituents or additives characterised by their shapes
    • C04B2235/5208—Fibers
    • C04B2235/5216—Inorganic
    • C04B2235/522—Oxidic
    • C04B2235/5224—Alumina or aluminates

Abstract

The invention discloses a method for preparing a reticular ceramic membrane, which comprises the following steps of ceramic fiber pretreatment: cutting and dispersing the ceramic fibers on dissociation equipment, and then decomposing the bundle fibers into single fibers to be dispersed in deionized water; then, the treated fiber is dewatered and filtered from the solution and dried for 5 hours at the temperature of 150 ℃; s2, dispersing the treated ceramic fiber into a dispersing agent and stirring; respectively adding a high-temperature binder and corn starch into the dispersion liquid to form slurry in the continuous stirring process, continuously stirring to obtain composite slurry containing ceramic fibers and additive powder, and continuously and fully stirring the slurry in a mixing device for 10 min; and S3, finally, injecting the mixture into a metal mold, moving the metal mold to an oven, drying for 24 hours at the temperature of 40 ℃, taking out the green body from the mold, and sintering for 2 hours at high temperature under certain conditions to finally obtain the reticular ceramic membrane. The ceramic membrane prepared by the invention has a highly porous three-dimensional network structure and has high removal efficiency on dust particles with the diameter of 0.3-10 um.

Description

Method for preparing reticular ceramic film
Technical Field
The invention relates to the technical field of ceramic membranes, in particular to a method for preparing a reticular ceramic membrane.
Background
The porous ceramic membrane is used as a high-efficiency filter material and has various unique physical and chemical properties, such as lower apparent density, high chemical stability and thermal stability, high mechanical strength, low thermal conductivity and good thermal shock resistance. However, the existing method for preparing the ceramic membrane has many problems, namely complex preparation process, complex process and high cost.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for preparing a reticular ceramic membrane, and solves the problems of complex preparation process, complex process and high cost of the ceramic membrane.
In order to achieve the purpose, the invention is realized by the following technical scheme: a method for preparing a reticular ceramic membrane specifically comprises the following steps:
s1, pretreatment of ceramic fibers: cutting and dispersing the ceramic fibers on dissociation equipment, and then decomposing the bundle fibers into single fibers to be dispersed in deionized water; then, the treated fiber is dewatered and filtered from the solution and dried for 5 hours at the temperature of 150 ℃;
s2, dispersing the treated ceramic fiber into a dispersing agent and stirring; respectively adding a high-temperature binder and corn starch into the dispersion liquid to form slurry in the continuous stirring process, continuously stirring to obtain composite slurry containing ceramic fibers and additive powder, and continuously and fully stirring the slurry in a mixing device for 10 min;
and S3, finally, injecting the mixture into a metal mold, moving the metal mold to an oven, drying the metal mold for 24 hours at 40 ℃, taking the green body out of the mold, and sintering the green body for 2 hours at a high temperature of 1250 ℃ (the heating rate of 3 ℃/min), thus obtaining the reticular ceramic membrane finally.
Preferably, the ceramic fiber in step S2 is a polycrystalline alumina fiber.
Preferably, the dispersant in step S2 is formed by dissolving carboxymethyl cellulose in deionized water.
Preferably, the high-temperature binder in step S2 is composed of kaolin and feldspar powder (1: 1).
Advantageous effects
The invention provides a method for preparing a reticular ceramic membrane. Compared with the prior art, the method has the following beneficial effects: the preparation process is simple, the process is not complicated, the reagents used in the preparation process are low in cost, and the prepared ceramic membrane has a highly porous three-dimensional network structure and has high removal efficiency on dust particles with the diameter of 0.3-10 mu m.
Drawings
FIG. 1 is an SEM image of a ceramic membrane prepared according to the present invention;
FIG. 2 is a graph showing the dust removal efficiency of the ceramic membrane prepared according to the present invention for 0.3-10um dust particles.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, an embodiment of the present invention provides a technical solution: a method for preparing a reticular ceramic membrane specifically comprises the following embodiments:
example 1
S1, pretreatment of ceramic fibers: putting the polycrystalline alumina fiber on a dissociation device for cutting and dispersion, and then decomposing the bundle fiber into single fibers to be dispersed in deionized water; then, the treated fiber is dewatered and filtered from the solution and dried for 5 hours at the temperature of 150 ℃;
s2, dispersing the treated ceramic fiber into a dispersing agent formed by dissolving 5g of carboxymethyl cellulose in 100ml of deionized water and stirring; respectively adding 10g of kaolin and feldspar powder (1:1) to form a high-temperature binder and 10g of corn starch into the dispersion liquid to form slurry in the continuous stirring process, continuously stirring to obtain composite slurry containing ceramic fibers and additive powder, and continuously and fully stirring the slurry in a mixing device for 10 min;
and S3, finally, injecting the mixture into a metal mold, moving the metal mold to an oven, drying the metal mold for 24 hours at 40 ℃, taking the green body out of the mold, and sintering the green body for 2 hours at a high temperature of 1250 ℃ (the heating rate of 3 ℃/min), thus obtaining the reticular ceramic membrane finally.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. A method for preparing a reticular ceramic membrane is characterized by comprising the following steps: the method specifically comprises the following steps:
s1, pretreatment of ceramic fibers: cutting and dispersing the ceramic fibers on dissociation equipment, and then decomposing the bundle fibers into single fibers to be dispersed in deionized water; then, the treated fiber is dewatered and filtered from the solution and dried for 5 hours at the temperature of 150 ℃;
s2, dispersing the treated ceramic fiber into a dispersing agent and stirring; respectively adding a high-temperature binder and corn starch into the dispersion liquid to form slurry in the continuous stirring process, continuously stirring to obtain composite slurry containing ceramic fibers and additive powder, and continuously and fully stirring the slurry in a mixing device for 10 min;
and S3, finally, injecting the mixture into a metal mold, moving the metal mold to an oven, drying the metal mold for 24 hours at 40 ℃, taking the green body out of the mold, and sintering the green body for 2 hours at a high temperature of 1250 ℃ (the heating rate of 3 ℃/min), thus obtaining the reticular ceramic membrane finally.
2. The method of claim 1, wherein the step of preparing a reticulated ceramic membrane comprises: in step S2, polycrystalline alumina fiber is used as the ceramic fiber.
3. The method of claim 1, wherein the step of preparing a reticulated ceramic membrane comprises: the dispersing agent in the step S2 is formed by dissolving carboxymethyl cellulose in deionized water.
4. The method of claim 1, wherein the step of preparing a reticulated ceramic membrane comprises: the high-temperature binder in step S2 is composed of kaolin and feldspar powder (1: 1).
CN202110790170.4A 2021-07-13 2021-07-13 Method for preparing reticular ceramic film Withdrawn CN113387718A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103524140A (en) * 2013-09-23 2014-01-22 天津大学 Oxide ceramic fiber board
CN105289150A (en) * 2015-11-04 2016-02-03 合肥丰德科技股份有限公司 Ceramic fiber high temperature gas filter and preparation method thereof
CN106007722A (en) * 2016-05-19 2016-10-12 山东工业陶瓷研究设计院有限公司 High-performance high-temperature ceramic film material and preparation method thereof
CN111548125A (en) * 2020-04-15 2020-08-18 天津大学 Preparation method of gradient-hole multilayer ceramic membrane

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103524140A (en) * 2013-09-23 2014-01-22 天津大学 Oxide ceramic fiber board
CN105289150A (en) * 2015-11-04 2016-02-03 合肥丰德科技股份有限公司 Ceramic fiber high temperature gas filter and preparation method thereof
CN106007722A (en) * 2016-05-19 2016-10-12 山东工业陶瓷研究设计院有限公司 High-performance high-temperature ceramic film material and preparation method thereof
CN111548125A (en) * 2020-04-15 2020-08-18 天津大学 Preparation method of gradient-hole multilayer ceramic membrane

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
唐钰栋: "高温陶瓷纤维膜材料的制备及影响因素分析", 《现代技术陶瓷》 *
彭靓: "陶瓷膜在高温燃煤烟气净化中的比选研究", 《广州化工》 *

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